Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-09-04
Commun.Math.Phys.277:323-367,2008
Physics
High Energy Physics
High Energy Physics - Theory
48 pages, typos corrected, one reference added
Scientific paper
10.1007/s00220-007-0369-1
The appearance of the Bethe Ansatz equation for the Nonlinear Schr\"{o}dinger equation in the equivariant integration over the moduli space of Higgs bundles is revisited. We argue that the wave functions of the corresponding two-dimensional topological U(N) gauge theory reproduce quantum wave functions of the Nonlinear Schr\"{o}dinger equation in the $N$-particle sector. This implies the full equivalence between the above gauge theory and the $N$-particle sub-sector of the quantum theory of Nonlinear Schr\"{o}dinger equation. This also implies the explicit correspondence between the gauge theory and the representation theory of degenerate double affine Hecke algebra. We propose similar construction based on the $G/G$ gauged WZW model leading to the representation theory of the double affine Hecke algebra. The relation with the Nahm transform and the geometric Langlands correspondence is briefly discussed.
Gerasimov Anton A.
Shatashvili Samson L.
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